Punching-machine.



(llo Model.)

F. F. cuMMs. PUNCHING MACHINE.

(Appxicazin med Aug. 29, 1901.)

Patented 1an. 28,1902.

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INVENTOH ATTOHNEYS lo. 692,|22. Pmmd 1an. 2a, |902.

F. F. eurams.

PUNGHING MACHINE.

(Application med Aug. 2a, 1901.)

3 Shasta-Sheet 2.

(No wandel.)

v er 4% No. 692,|22. Patented 1an. 28, |902.

F. F. `cumwls.

PUNCHING MACHINE.-

`(Application Bled Aug. 29, 1901.) n

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UNITED STATES PATENT OFFICE.

FRANK F. CUMMS, OF-RUTLAND, VERMONT.

PUNCHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 692,122, dated January 28, 1902.

Original application filed December 4, 1900, Serial No. 38,668. Divided and this application filed August 29, 1901. Serial To all whom it ntcty'concern.:

Be it known that I, FRANK F. CUMMs, a citizen of the United State`s,and a resident of Rutland, in the county of Rutland and the State of Vermont, have invented a new and Improved Punching-Machine, of which the following is a full, clear, and exact description, this being a division of the application for Letters Patent of the United States for a. leather-working machine, Serial No,38,668, filed by me December 4, 1900.

The object of the invention is to provide aA new and improved punching-machine which is simple and durable in construction, very effective in operation, and more especially designed for punching holes in straps or similar goods at desired distances apart.

The invention consists of novel features and parts and combinations of the same, as will be fully explained hereinafter and then pointed out in the claims.

A practical embodiment of the invent-ion is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

v Figure l is a longitudinal sectional elevation of the improvement on the line l 1 ot' Fig. 2. Fig. 2 is a plan view of the same, and Fig. 3 is a transverse section ot' the same on the line 3 3 of Fig. l.

The punchingmachine is mounted on a suitably-constructed frame having side pieces lO, Within which is a platform 1l, supporting a bed-plate l2, over which passes the strap 13 to be provided with holes. The strap is fed forward in the direction of the arrow 0, by a feeding device of any approved construction--for instance, revoluble feed-rollers 14, as is shown in the drawings. The strap 13 is guided in'its forward movement over a table 15 and between guide-blocks 16, screwing on the right and left hand screw-rod 17 under the control of the operator and serving to adjust the blocks 16 for straps of different widths.

Rearward of the rollers 14 is a punch-carrying bar 48, having its ends engaging in guides 49, attached to the inner sides of.the

(No model.)

side pieces 10, and extending downward from the ends of the punch-carrying bar 48 are rods 50, passing freely through openings in the platform 11,'and arranged between the upper side of this platform l1 and the under side of the bar 48 are cushion-springs 5l, the latter being coiled around the rods 50. The center of the bar 48 is provided with an opening into which a punch 52 may be inserted. Of coursea punch of any desired size may be employed.

As a means for forcing the punch downward with the carrying-bar 48 I employ a tappet device, here shown as a sleeve 53, which is provided with a series of outwardly-extended cams or tappet-ingers 54. The tappet-fingers extend in varying lengths from one end of the sleeve 53, so that by adjusting the sleeve 53 longitudinally of the shaft 55, on which it is mounted, the said tappetfingers may be brought into position to cause one or more of said fingers to engage with the punch during the rotation of the sleeve-that is, by moving the sleeve 53 to its extreme position toward the fly-wheel 56 on the shaft 55 the widest tappet-flnger only will engage to operate the punch, and therefore the punch will be operated but once at each complete rotation of the shaft 5,5.

Should it be desired to punch two holes closer together, the sleeve 53 is to be moved so that not only the longest tappet-nger will engage with` the punch, but the next longer tappet-iinger will also engage with the punch. This will cause two movements of the punch during one rotation of theshaft. Obviously by moving the sleeve to its extreme position away from the fly-wheel 56 all of the tappets will be brought into position to operate the punch. Y The sleeve 53 is moved in one direction by means of a nut 57, engaging with a screw-thread on the shaft 55 and abutting at its end against one end of the sleeve 53. The sleeve is moved in the opposite direction when the nut is released or moved toward the fly-wheel by means of a spring 58, surrounding the shaft and engaging at one end with the end of said sleeve and at the other end with one of the arms 59, connected to the shaft 55.

^ sleeve 53, and its lower end is designed to engage with a stop 63 on the platform 11 when the arms or frame are moved to bring the tappet device to operative position, as indicated in Fig. 1. ward and rearward to allow the material punched out to readily discharge from the machine.

On the outer end of one of the shafts 65 for the rollers 14 is a drive-wheel 66, that may be operated either by a suitable driving-band or may be operated by a crank-handle 67. On this end of the shaft 65 is a gear-wheel 68, which meshes with a gear-wheel 69, attached to the shaft 55,so that when the shaft 65 is rotated a rotary motion is transmitted by the gear-Wheels 68 69 to the shaft 55 and to the sleeve 53. Thus the feeding of the strap 13 is in unison with the movement of the sleeve 53, operating the punch 52.

The frame or arms 59 when moved to their downward position are prevented from jar by means of cushion-springs 80, which engage at their lower ends with the platform 11 and at their upper ends with tubes or sleeves S1, against the upper ends of which said arms 59 may strike.

When it is desired to punch holes through the strap, then the holding-lever 62 is moved .Connected with the cross.

The bed-plate 12 is inclined down- Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a punching-machine, a frame, a Vertically-movable punch-carrying bar in said frame, and a rotary tappet having tappetngers of varying lengths for causing the downward movement of said bar, as set forth.

2. Inapunching-machine,aframe,apuncl1 carrying bar movable vertically in said frame, a shaft supported in the frame, a sleeve adjustable longitudinally on said shaft, and a series of tappet-ngers on said sleeve for operating the punch, said fingers being of varying lengths, as set forth.

3. Inapunching-machine,a frame,a punchcarrying bar movable verticallyin the frame, a shaft extended across the frame, means for raising and lowering said shaft, a sleeve adjustable longitudinally of the shaft and a series of tappet-iingers on said sleeve, said tappet-ingers being of different lengths, subt-antially as specified.

4. A punching-machine having a springpressed bar mounted to slide and adapted to carrya punch, and a revoluble tappet-sleeve having tappet-fugers of different lengths, as set forth.

5. A punching-machine having a springpressed bar mounted to slide and adapted to carry a punch, a revoluble tappet-sleeve having tappet-ugers of different lengths, and means for adjusting said sleeve transversely to bring one or more of the tappet-'ngers in operative position relative to the punch, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK F. CUMMS.

Vtfitnessesz- B. H. STICKNEY, R. L. RICHMOND. 

